參數(shù)資料
型號(hào): EM73470
廠商: ELAN Microelctronics Corp .
英文描述: 4-Bit Micro-Controller for Telecom Product(用于數(shù)字應(yīng)答控制器的4位微控制器)
中文描述: 4位微電信產(chǎn)品(用于數(shù)字應(yīng)答控制器的4位微控制器控制器)
文件頁(yè)數(shù): 10/20頁(yè)
文件大?。?/td> 126K
代理商: EM73470
10
EM73470
4-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
* This specification are subject to be changed without notice.
8.1.1998
VOX signal detection bit
0 : The voltage of AMPO pin
V
REF
+VOXt2.
1 : The voltage of AMPO pin
V
REF
-VOXt1.
User can select among four sets of VOXt1 and VOXt2 based on the requirements of the applications. For
further details, please refer to the descriptions in the paragraph of VOX sensitivity control port (P30.3,
P30.2) of this document.
SCH1 bit
0 : SCH1 pin is > 0.7 V
DD
.
1 : SCH1 pin is < 0.3 V
DD
.
SCH2 bit
0 : SCH2 pin > 0.7 V
DD
.
1 : SCH2 pin < 0.3 V
DD
.
Digital volume control port (P13)
The port P13 controls the level of SIGOUT output. Programming P13 to be 0000B to get the maximum, and
1111B to get silence.
P13
bit 3
bit 2
0
ST4
bit 1
0
ST2
bit 0
0
ST1
0
Initial Value
ST8
The SIGOUT level is attenuated as follows:
Stage 0 0000 :
Stage 1 0001 :
Stage 2 0010 :
Stage 3 0011 :
Stage 4 0100 :
Stage 5 0101 : -11.5 dB
Stage 6 0110 : -13.9 dB
Stage 7 0111 : -16.3 dB
0 dB
Stage 8 1000 : -18.7 dB
Stage 9 1001 : -21.1 dB
Stage 10 1010 : -23.5 dB
Stage 11 1011 : -26.2 dB
Stage 12 1100 : -28.5 dB
Stage 13 1101 : -31.0 dB
Stage 14 1110 : -33.5 dB
Stage 15 1111 : silence
- 2.3 dB
- 4.6 dB
- 6.9 dB
- 9.2 dB
SLEEP control port (P16)
P16
bit 3
1
bit 2
*
bit1
1
bit0
1
Initial Value
WURM
WUWT
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